4. When the Republican Party was formed, its members were most strongly committed to O A. avoiding a civil war by compromising with the South
O B. preventing the spread of slavery into new territories
O c. adopting a constitutional amendment to end slavery
OD. preserving the balance between free and slave states

Option B

Explanation:

The Republican Party was not in favor of extending slavery into new territories and hence they were strongly committed to it.

And this is the reason why Kansas-Nebraska Act gained controversy as it was giving rights to the city dwellers to permit slavery in their respective territories  in lieu of a vote.

Hence, option B is correct

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.